Local Calling Guide

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NPA: 410 [Rate centres in NPA 410] [Dial plan for NPA 410]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-721 A Crofton MD COTNMDCRDS0  9212 VERIZON MARYLAND, INC. 238      
410-722 A Waterloo (Washington DC LATA) MD MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
410-723 A Ocean City MD OCCYMDONDS0  9212 VERIZON MARYLAND, INC. 242      
410-724 A Waterloo (Washington DC LATA) MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-724 0 Waterloo (Washington DC LATA) MD   9212 VERIZON MARYLAND, INC. 236      
410-724 1 Waterloo (Washington DC LATA) MD   568G PEERLESS NETWORK OF MARYLAND, LLC 236   2020-10-26   
410-724 2 Waterloo (Washington DC LATA) MD   9212 VERIZON MARYLAND, INC. 236      
410-724 3 Waterloo (Washington DC LATA) MD   9212 VERIZON MARYLAND, INC. 236      
410-724 4 Waterloo (Washington DC LATA) MD   9212 VERIZON MARYLAND, INC. 236      
410-724 5 Waterloo (Washington DC LATA) MD   9212 VERIZON MARYLAND, INC. 236      
410-724 6 Waterloo (Washington DC LATA) MD   9212 VERIZON MARYLAND, INC. 236      
410-724 7 Waterloo (Washington DC LATA) MD   9212 VERIZON MARYLAND, INC. 236      
410-724 8 Waterloo (Washington DC LATA) MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2006-09-21   
410-724 9 Waterloo (Washington DC LATA) MD   9212 VERIZON MARYLAND, INC. 236      
410-725 A Easton MD SLBRMDSCXMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242   2024-02-09   
410-725 0 Easton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242      
410-725 1 Easton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242      
410-725 2 Easton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242   2007-08-22   
410-725 3 Easton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242   2007-08-22   
410-725 4 Easton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242      
410-725 5 Easton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242   2011-03-15   
410-725 6 Easton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242      
410-725 7 Easton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242   2004-07-11   
410-725 8 Easton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242   2007-08-22   
410-725 9 Easton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242      
410-726 A Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242      
410-727 A Baltimore MD BLTMMDCHDS3  9212 VERIZON MARYLAND, INC. 238      
410-728 A Baltimore MD BLTMMDMDDS0  9212 VERIZON MARYLAND, INC. 238      
410-729 A Severn MD DRCRMDDCDS0  9212 VERIZON MARYLAND, INC. 238      
410-729 0 Severn MD   9212 VERIZON MARYLAND, INC. 238      
410-729 1 Severn MD   9212 VERIZON MARYLAND, INC. 238      
410-729 2 Severn MD   9212 VERIZON MARYLAND, INC. 238      
410-729 3 Severn MD   9212 VERIZON MARYLAND, INC. 238      
410-729 4 Severn MD   9212 VERIZON MARYLAND, INC. 238      
410-729 5 Severn MD   9212 VERIZON MARYLAND, INC. 238      
410-729 6 Severn MD   876D ONVOY, LLC - MD 238   2016-03-14   
410-729 7 Severn MD   9212 VERIZON MARYLAND, INC. 238      
410-729 8 Severn MD   9212 VERIZON MARYLAND, INC. 238      
410-729 9 Severn MD   9212 VERIZON MARYLAND, INC. 238      
410-730 A Columbia MD CLMAMDCBRP0  9212 VERIZON MARYLAND, INC. 238      
410-731 A Annapolis MD HNVAMDAE3MD  6630 USA MOBILITY WIRELESS, INC. 238      
410-732 A Baltimore MD BLTMMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
410-733 A Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-734 A Churchville MD CCVLMDCHRS0  9212 VERIZON MARYLAND, INC. 238      
410-734 0 Churchville MD   9212 VERIZON MARYLAND, INC. 238      
410-734 1 Churchville MD   9212 VERIZON MARYLAND, INC. 238      
410-734 2 Churchville MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-03-03   
410-734 3 Churchville MD   876D ONVOY, LLC - MD 238   2016-03-25   
410-734 4 Churchville MD   9212 VERIZON MARYLAND, INC. 238      
410-734 5 Churchville MD   876D ONVOY, LLC - MD 238   2016-03-07   

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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